ESN Clear Whey Isolate - Clear Whey ESN Rafraîchissante

What is ESN Clear Whey Isolate?

ESN Clear Whey Isolate is a clear whey: a whey protein isolate formulated to stay dissolved in an acidic medium and give a translucent, fruity drink rather than a creamy shake. The list is short: whey isolate, citric acid, flavourings, sweeteners (sucralose, acesulfame K), colours depending on the flavour.

It is produced by ESN, a German brand, and stands out from most clear wheys on the market by how much it is diluted: the manufacturer recommends 500 ml of water for a single serving, where the average across the category sits between 300 and 400 ml. The result is closer to a thirst-quenching drink than to a shake.

The flavours listed, two of them built on an iced tea profile — which remains rare in the category.

What does a serving of ESN Clear Whey Isolate contain?

The reference serving is 30 g. It provides 25 g of protein for around 100 kcal, less than 0.5 g of carbohydrate of which as much again in sugars, less than 0.1 g of fat and less than 0.1 g of lactose per 100 ml of the prepared drink once diluted.

Twenty-five grams of protein in thirty grams of powder puts the product very high on density, where many clear wheys top out at 18 or 20 g per serving. The manufacturer states a purity of 90 to 95% on the raw material, as well as 48.9% essential amino acids and 22.7% BCAAs in the protein fraction — figures we pass on while attributing them to it, in the absence of a detailed amino acid profile.

Three pieces of data are missing and we are not inventing them: the manufacturer publishes neither a "per 100 g" column, nor a value in kilojoules, nor a salt content — it states only that the salt varies according to the flavour. The net weight of the tub and the number of servings it contains have not been communicated to us; we would rather write that than put forward a figure. The detail that is available appears in the nutritional values tab.

Protein here accounts for virtually all of the energy provided. The only usable health wording remains the one in Regulation 432/2012: proteins contribute to a growth in and the maintenance of muscle mass.

How do you prepare ESN Clear Whey Isolate?

The manufacturer states 30 g of powder in 500 ml of very cold water, shaken for 10 to 15 seconds. One to three servings a day, with no course duration: it is a protein food, not a treatment. You can go down to 400 ml for a more concentrated drink, but below that the taste turns acidic and the foam lingers longer.

Two instructions apply specifically to this type of product. Do not mix it with milk: the acidity makes the casein flocculate and the drink turns grainy. And do not heat it — a clear whey coagulates when cooked, so it is unusable in baking.

Timing is not decisive: during the session in small sips, straight afterwards, or elsewhere in the day. What matters is the total protein over 24 hours. A shaker with a wide neck and no metal whisk keeps the foam down; the accessories section has some.

Who is this clear whey for, and who is it not for?

It is aimed at three profiles. Those who can no longer face a milky shake, whether from heaviness or from weariness. Those who train in summer and for whom nothing creamy goes down at the end of a session. And those who digest lactose poorly: less than 0.1 g per 100 ml of drink is one of the best tolerated forms of whey.

The product contains MILK and may contain traces of SOYA, EGG and NUTS owing to manufacture in a shared facility. An allergy to cow's milk protein rules it out: filtration removes the lactose, never the proteins. The manufacturer invites pregnant or breastfeeding women to seek professional advice and refers you to your doctor in the event of kidney trouble.

It does not suit you if you cook with your powder, if you are looking for a drink that keeps you going between meals, or if you take two or three servings a day: at that rate, the price per kilo of protein becomes the deciding criterion and a conventional isolate wins out. Nor is it a drink for during exercise: it provides neither carbohydrate nor electrolytes in useful amounts. For that, see our electrolytes or our EAAs.

ESN Clear Whey Isolate or Rule One Clear Isolate?

We sell both, and they are not separated by quality but by three figures.

The serving: 30 g at ESN for 25 g of protein, against 25 g at Rule One for 20 g of protein. If you are aiming for a high intake in a single serving, ESN comes out ahead. The volume: 500 ml against 350 to 400 ml. The ESN version takes longer to drink and is more thirst-quenching; the Rule One one is closer to a conventional shaker format. The formula: Rule One adds 300 mg of an electrolyte complex per serving, ESN adds none.

Rule One is therefore the better choice if you want a reasonable drink volume and a touch of sodium after a sweaty session. ESN wins if you are after the maximum protein per serving and a drink that lasts the whole session. And if the main criterion is budget, then neither: a whey concentrate is enough for most people, and an isolate is only justified by lactose intolerance, a tight cutting phase or a genuine digestive problem.

Frequently asked questions

What exactly is a clear whey?

A whey isolate formulated to stay clear in an acidic medium. Where a conventional whey gives an opaque, milky drink, a clear whey gives a transparent, tangy drink, close to a juice. The raw material is the same; it is the formula that changes.

Why 500 ml of water and not 250?

Because the formula is acidic and very concentrated in protein. Below 400 ml, the acidity dominates, the foam persists and the drink becomes hard to finish. The 500 ml recommended by ESN make it a drink to sip during exercise rather than a shake to down in one.

Which flavours are available?

Fresh Cherry, Iced Tea Peach, Iced Tea Peach-Mango, Green Apple, Blackberry and Cactus Fruit. The salt varies according to the flavour, as the manufacturer does not publish a single value.

How many servings does the tub contain?

We do not know for certain: the net weight of the pack does not appear in the data passed on by the manufacturer, and we do not publish a number of servings calculated on an assumption. Ask us before ordering and we will check on the tub.

Can it be mixed with milk?

No, and it is not a question of taste. The acidity of the formula destabilises the casein in milk: the mixture curdles and turns grainy. Use very cold water. Crushed ice improves the result further, especially on the iced tea flavours.

Is it suitable in cases of lactose intolerance?

In most cases, yes: less than 0.1 g of lactose per 100 ml of prepared drink is very low. Take care not to confuse lactose intolerance with an allergy to cow's milk protein: in the second case, the product is contraindicated, whatever the degree of filtration.

What is the difference from ESN Designer Whey?

Designer Whey is a blend of concentrate and isolate, to be drunk in 200 ml, with a milkshake texture and milky flavours. Clear Whey Isolate is an isolate on its own, to be drunk in 500 ml, translucent and fruity. The first can be cooked with, the second cannot. They are not aimed at the same moment of the day.

Where can you buy ESN Clear Whey Isolate?

The flavours can be ordered here, and we ship throughout France and Europe. On a tangy drink, the flavour is the one criterion a product sheet cannot settle: in our shop in Vendargues, about ten minutes from Montpellier, we will tell you which ones come up most often in the regulars' baskets — and which ones rarely leave a second time.

The rest of the range can be compared in our proteins collection.